{
"manageEntity": {
"action": "Save",
"entityId": "121334",
"entityType": "Track",
"nonce": "0x2de1a5adb78c8ba26aa64abd78302946ccfe58c6d5e80f06661d99ad33eb8e49",
"signature": "0x98b990e2a891e3e17656bbf3675e732db2243df066db764f7a276df33d08f44b236309052c7dd1f24931de37e440fb0208e676763c5351884d94c4d765d631121b",
"signer": "0x3D4d8a781454E2338c482dE697d6DE1ACc7D9031",
"userId": "599751364"
}
}